Astronomers record repetitive radio signals from space. Astronomers receive a powerful signal from space Signals from space give hope

Some astronomers are sure that there are so many planets in the Universe that among them there are not only potentially habitable places, but also habitable worlds, therefore, since the late 50s of the 20th century, scientists have been constantly searching for extraterrestrial civilizations within the framework of the SETI project (Search for Extraterrestrial Intelligence). Not only scientists and astronomers, but also many amateurs take part in these difficult searches, periodically stumbling upon something unusual and interesting. For example, in 1977, astronomers recorded an unusual signal very similar to what scientists expected to ever receive. Dr. Jerry Eiman, who recorded this signal, circled the group of symbols on the paper with a pen and signed "Wow!", Thus expressing his surprise at the find.

Despite the growing skepticism on the part of a number of scientists regarding confidence in the existence of alien life, the search continues. And it looks like the astronomers were able to spot something interesting again. Alexander Panov, an employee of the Zelenchuk Radio Astronomy Observatory, spread a message that the RATAN-600 radio telescope detected "a strong signal in the direction of HD164595." Despite the fact that it was recorded by a radio telescope on May 15, 2015, information about its detection began to appear only a few days ago. The fact is that from the moment this signal was detected, scientists were waiting for its repetition, which, alas, could not be detected.

No one claims that this signal was sent by a highly developed civilization, but astronomers urge colleagues to carefully examine the situation. The star system HD164595 is located in the constellation Hercules at a distance of 95 light years from Earth and, according to experts, its age is about 6 billion years. An exoplanet was previously discovered in this system. Life on it is most likely impossible, but astronomers listened to their Russian colleagues calling for observation, and on Monday they began to monitor HD164595.

The received signal was very strong, and it could not have been sent by a civilization similar to ours in terms of development. In order to send a signal of such power, a potential civilization would need to master the energy of a star for its needs. On the other hand, if the radio signal was intentionally directed towards us, then anything is possible. According to the SETI experts, theoretically, such a message could have been sent by the so-called "Type II Kardashian civilization" in order to greet us or, for example, send a signal for help.

The signal is not yet clear, nevertheless, astronomers almost completely rule out its accidental origin. According to them, this is the least like ordinary noise. The opening is scheduled to be discussed in Mexico at the SETI council on September 27.

I am very skeptical about information about all kinds of aliens and signals from distant space. Even if for millions of years some signal came from somewhere, then taking into account our capabilities and distances - WELL AND WHAT?

However, for the second time in history, astronomers have succeeded in discovering a source of powerful repetitive radio signals in space. But what or who emits these impulses is still a mystery.

In 2007, studying the archives of the Parks Observatory in Australia, two researchers discovered a radio signal that the observatory recorded six years ago, but no one noticed. It lasted only a few milliseconds, but it was striking in its power - the radiation was 500 times more powerful than solar radiation.

Since then, astronomers have been trying to figure out what caused these mysterious emissions. There are many theories: some blame black holes, others - collisions of neutron stars. Perhaps a certain object in the center of the galaxy is gradually falling into a supermassive black hole - or, on the contrary, this mysterious dark matter interacts with pulsars, causing powerful bursts of energy. However, none of these theories can yet be proven or disproved by means of factual evidence, because there is one global problem: the recorded radio signals lasted a negligible amount of time and then disappeared without a trace.

However, new publications in the journal Nature shed light on the nature of the space anomaly. For only the second time in history, astronomers have finally discovered a source that is repeating its signal. This phenomenon is called "fast radio bursts" (English fast radio bursts, otherwise FRB): 13 new signals were discovered by employees of the Canadian Hydrogen Intensity Mapping Experiment.

Until now, scientists only knew. A new source, FRB 180814. J0422 + 73, was discovered in the summer of 2018 - even before the CHIME equipment finally went online. After the launch, this signal appeared several more times, although the exact coordinates of the source have not yet been established.

Where do the theories about black holes come from, then? In fact, the nature of the signal scattering and a relatively small (according to observations) source, which emits radio waves with enormous power, indicate that the source itself is in a very aggressive environment - most likely it will be either a black hole or a neutron star. There is another curious hypothesis, according to which a collision of dense objects can serve as a source.

Can this riddle be solved? Can. However, for this, scientists will need to collect much more information - in particular, they will have to find other sources of repetitive signals, as well as some related events, for example, flashes of light in the visible spectrum.

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The science

On Earth, a number of mysterious pulsating signals have been received from outside the solar system, scientists said.

Researchers believe that perhaps radio signals from space have an artificial source(human or non-human).

So called fast radio pulses are radio signals that last for about a millisecond and release as much energy as the sun generates in a day.

This year, several of these signals were seen for the first time. To understand how far these fast radio pulses travel, astronomers use scatter: the farther away the signal, the greater the scatter.

Signals from space

New research finds 10 such fast radio pulses, and the intervals separating the beginning and end of these signals were multiples of 187.5. This suggests that each of them came from separate sources located one after another at an equal distance from the Earth.

However, the probability that the placement of these signals is random is 5 in 10,000.

Scientists believe that it is unlikely that these radio signals, spaced at equal intervals, were from another galaxy, as the dust would have caused a mess, and most likely the signal is coming from our Milky Way galaxy.

The discovery was made Michael Hippke(Michael Hippke) from the Institute for Data Analysis in Neukirchen, Germany and John Lernd(John Learned) from the University of Hawaii.

Rapid radio flashes may be caused by natural but unknown processes ranging from flare stars and white dwarf mergers and neutron star collisions.

If we exclude these options, then scientists consider the likelihood artificial (human or non-human), for example technologies of intelligent beings.

"We have something really interesting to figure out," Michael Hippke said.

Extraterrestrial civilizations

In the 60s, Russian scientist Nikolai Kardashev began to investigate what radio signals from an advanced extraterrestrial civilization might be. In his work "Transmission of Information by Extraterrestrial Civilizations", written in 1963, he classified extraterrestrial civilizations into 3 categories.

Signal from civilization type I uses planetary energy from all its sources: solar, thermal, volcanic, tectonic, hydrodynamic, oceanic, etc.

Type II civilization uses the energy of his star. To do this, she needs to capture the radiation of the Sun, throw material into a black hole and absorb the radiation, or travel to many planets and deprive them of their resources.

Type III civilization capable of harnessing the energy of an entire galaxy, such as the Milky Way. If a Type III civilization existed in the galaxy, it would be immersed in darkness, except for residual infrared radiation from large technology projects.

As we know, even without this signal, scientists have enough problems with mysterious messages from deep space. This is both invisible light and the usual numerous radio signals from black holes, stars, and other cosmic bodies. That there is only one intergalactic light, which occupied the minds of a large number of researchers and connected a huge amount of equipment to study itself!

Scientists are aware of bursts of radio signals, which they classify as FRB. They are super strong, extra bright, lasting a few milliseconds. Their exact source is not even assumed, and they can fly to us for several billion years.

It is not space that gives rise to secrets - it is open and accessible. It is a person who does not yet have sufficiently advanced tools to collect enough data to recognize everything that lives and develops in space.

For the first time signals of the FRB category were detected in 2007. During this year there were about sixty of them. And now the number is growing relentlessly and rather rapidly. In the last couple of months alone, scientists from the UK have discovered thirteen. And among them, seven are pulsed, recorded at a frequency of four hundred megahertz. And this is the lowest frequency for this type of signal. Also, a signal was recorded that blinked repeatedly - as many as six times in a row.

This is the second repeating signal. It was this couple that puzzled scientists for several years to come. After all, something is emitting these repetitive flashes. And this something can hardly be attributed to all of the above sources.

True, some suggest that supernovae, more precisely, their remnants, may be related to these radio signals. Or, some supermassive black holes are capable of emitting FRBs.

Here is just one of the scientists Avi Loeb from the Harvard-Smithsonian Center for Astrophysics, who, by the way, was not involved in the study, suggested an artificial origin of the signals. Impulses that may come from an alien spacecraft cannot be ruled out.

It is worth noting that repeated signals appeared in the same place for several months. Therefore, sources such as supernovae were excluded. After all, they can release a powerful radio signal only once at the time of death. In addition, as scientists calculated, FRBs are much more common. Than they can be fixed by human technologies. Well, the fact that several signals at the lowest frequency for this kind of four hundred megahertz were nevertheless recorded, albeit with great difficulty, suggests that we simply cannot see a lot of similar ones. And in fact, a great many of them fly past the Earth.